Unfortunately, in terms of the BGM, the remastered theme song doesn't sound quite as good as the original - there are delayed echoes of the voices throughout the song, and some other weirdness.

Compare to the original here: http://www.youtube.com/watch?v=cD2RMy5z43w

Daniel Ingram remastered the theme song for Season 2, but the Discord episodes still had the original version. This is from S2E03 - Lesson Zero.

Music by Daniel Ingram
From My Little Pony: Friendship is Magic
Ponies copyright Hasbro

MP3: http://www.mediafire.com/?o3s548hxh29z2jw